Vaporizing device



N0v.1s,19 41. R LARSEN l 2,262,772

' VAPORIZING DEVICE Filed Jan. 23, 1959 Patented Nov. 18, 1941 VAPORIZING DEVICE Peder Larsen, Canton, Ohio Application January 23, 1939, SerialNo. 252,505

s Claims.v

The invention relates to vaporizing devices for vaporizing chemicalsolutions in order to sterilize the air in a room or other place inwhich the de-e vice is located.

An object of the improvement is to provide an electric motor operatedmeans for vaporizing the chemical solution.

A further object is to provide a device of thiskind including a motordriven fan for forcing air through a Venturi tube which draws thechemical solution through a suction tube for vaporizing the same anddischarging it into a separating chamber from which the vaporizedchemical issues into the room; any liquid which has not been vaporizeddraining back into the liquid container.

Another object of the improvement is to provide a clock switch or timerfor controlling the operation of the motor so that it willintermittently operate for predetermined periods of time.

The above objects together with others which will be apparent from thedrawing and following description or which may be later referred to maybe attained by constructing the improved vaporizing device in the mannerillustrated in the accompanying drawing in which Figure 1 is alongitudinal sectional View through a vaporizing device embodying theinvention;

Fig. 2, a transverse sectional view taken on the line 2-2,.Figure 1;

Fig. 3, an elevation of the lower portion of the vaporizing device shownin Figure 1.

mounted within the lower end of the housing preferably being supportedfrom the lower wall I8 of a fan housing, which is provided with theupstanding peripheral wall I9 having an outturned ange 20 supported upona ring 2-I which is mounted within the channel ring 22 mounted withinthe cylindric housing I and supported upon the angular ring 23 which isattached to the inner wall of the housing Ill. l

A ring 24 may be located between the peripheral ange of the fan casingand the upper flange of the channel ring 22. Mounted upon said upperange of the channel ring is the top wall 25 of the fan casing whichtogether with the angular ring 26 may be attached to-said upper nange asby screws 21.

The motor shaft 28 extends vertically upward into the fan chamber 29thus formed, and has a rotary fan 30 xed thereon. Air inlet openings 3|are formed in the top wall of the motor housing 32 and the bottom wallI8 of the fan casing and openings 33 are formed in the bottom wallSimilar numerals refer to similar parts thoughout the drawing.

The improved vaporizing device is adapted for sterilizing the air by theatomization of chemical solutions such as sodium hypo-chlorite solution(NaClO), and for this reason the various parts of the device, especiallythose parts which come in contact with the chemical are formed of glass,earthenware, vitrous enamel or certain plastics which the chemical willnot attact.

Referring rst to the construction illustrated in Figs. 1 to 3,inclusive, which is a preferred embodiment of the invention, the deviceis mounted within a housing I0 which may be of cylindrical form asshown, and provided with a top wall II having the central exhaust tubeI2 depending therefrom.

A reinforcing base ring I3 may be mounted within the lower end of thecylindric housing I0 and connected thereto as by the ring I4 having theannular attaching flanges I5 and I6 around its outer and innerperimeters, respectively.

An electric motor indicated generally at I1 is of the motor housing sothat air drawn in through the openings 34 in the lower portion of thehousing Il) will be drawn upward through the motor to the fan chamberthus tending to keep the motorl cool while operating.

A container 35 for the sodium hypo-chlorite solution or other chemicalsolution to be dispensed, is mounted upon the top wall 25 of the fancasing, the lower end of the container being positioned within theangular ring 26, and the upper end of the container communicates withthe drain tube 36 at the lower end of the conical bottom wall 31 of theseparating chamber casing 38, which together with the top wall II formsa separating chamber 39.

A tube 40 has its-lower end extended tangen.

tially into the fan chamber as 'indicated at 4I and its upper endextended tangentially into the separator chamber as indicated at 42 and'tion of the housing I0 through the apertures 34 and then through theapertures 33 and 3| to the fan chamber.

Pressure is built up in the fan chamber and the air is forced up throughthe tube 40 passing through the Venturi tube 43 which creates suction inthe tube 44 drawing the liquid chemical solution from the container 35.

'I'he air and liquid are forced .in vaporized coninet, a fan casingabove the motor, there being f an air inlctopenin'g in the bottom of thefan casing, a blower fan in the fan casing operatively connected to themotor, a liquid container above the fan casing, a liquid separator abovethe liquid container, the bottom of the liquid `separator communicatingwith the top of the liquid container, a pipe leading from the dischargeside of the fan casing to the top of the liquid separator,

a tube leading from the bottom of the liquid conf tainer to said pipe,and an exhaust tube located through'the' top of the cabinet anddepending into said liquid separator.

2. A vaporizing device including -a cabinet, having' an air inletopening inV its lower portion, an electric motor in the lower portion ofthe cabinet, means for time controlling the electric mo.

tor, a fan casing above the motor, there being an air inlet opening inthe bottom of the fan casing, a blower fan in the fan casing operativelyconnected to the motor, a liquid container above the fan casing, aliquid separator above the liquid container, the bottom of the liquidseparator communicating With the top of the liquid container, a pipeleading from the discharge side of the fan casing to the top of theliquid separator, a tube leading from the bottom of the liquid container.to saidpipe, and an exhaust tube located through the top of the cabinetand depending into said liquid separator.

3. A vaporizing device including a cabinet, having an air inlet openingin its lower portion, an electric motor in the lowerportion vof thecabinet, a fan casing above the motor, there being an air inlet openingin the bottom of the fan casing, a blower fan in the fan casingoperatively connected to the motor, a removable liquid container abovethe fan casing, a liquid separator above the liquid container, thebottom of the liq uoid separator communicating with the top of theliquid containeu, a pipe leading from the discharge side of the fancasing to the top of theliquid separator, a tube leading from the bottomof the liquid container to said pipe,v and an exhaust tube locatedthrough the top of the cabinet and depending into said liquid separator.

PEDER LARSEN.

